@article{00436732, title = {Completeness of the set of sub-}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {16}, year = {1993}, pages = {511-514}, doi = {10.1155/S0161171293000626}, zbl = {0782.28001}, language = {en}, url = {http://dml.mathdoc.fr/item/00436732} }
Wang, Xikui. Completeness of the set of sub-. International Journal of Mathematics and Mathematical Sciences, Tome 16 (1993) pp. 511-514. doi : 10.1155/S0161171293000626. http://gdmltest.u-ga.fr/item/00436732/